I can't afford to retire. personally I prefer working

来源: doitthen 于 2010-01-30 08:59:46 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (66 bytes)
回答: 博士／博士生请进 由 doitthen 于 2010-01-30 07:49:26

while studying, like taking one course per semester or per quarter

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